A Novel Static CTS Charge Pump with Voltage Level Controller for DC-DC Converters

Establishment of connection between parameters of CMOS inverter for Staticforce Optimization

“…A real model of the MOSFET, like BSIM involves manyeffects [2]. It contains many model parameters and any derivation is very difficult (implicit form, solving of irrational equations, etc.).…”

Guidelines on the Switch Transistors Sizing Using the Symbolic Description for the Cross-Coupled Charge Pump

“…This topology allows achieving higher efficiency compared with the static charge pump. However, the problem of reverse current still exists [4], [5].…”

“…The static charge pumps [2][3][4] realize the charge transport through the switch transistors, which are controlled by the output voltage from the next stage as is shown in Fig. 1.…”

“…It is a fundamental difference of approach compared to analog circuits [5]. The experimental part including simulation of real properties of the cross-coupled charge pump [5] and their comparison with other architectures (Dickson charge pump, a static charge pump) has been done [1][2][3][4], [6], [7]. However, a design process of the circuit has not been known yet.…”

“…The voltage drop between two nodes is theoretically determined by the saturation voltage of the switch (MOSFET) at the end of the charge transport. Conversely, when φ = V DD andφ = 0, M S1 must be OFF [4], so that capacitor connected to node i can be pumped up to 2V DD and forward charge transport between nodes i and i + 1 can be realized. The problem of the reverse current occurs at the same time (φ = V DD andφ = 0) because the voltage difference v inv − v i−1 may be higher than threshold voltage V TH MS1 .…”